What do these pictures have in common?

How are they different?

Smoke Signals and Email …

What do you think???

Smoke Signals and Email

• How are they the same? • How are they different?

Resources

http://www.google.com/images?um=1&hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&tbs=isch%3A1&sa=1&q=smoke+signals+images&aq=f&aqi=&aql=&oq=&gs_rfai=&start=0